*{box-sizing: border-box;padding:0;margin:0;}
/*列表样式*/
.demo-list{width:100%;padding:0;list-style: none;}
.demo-list li{position:static;display:block;width:100%;height:50px;padding:0 30px 0 10px;background-color:gray;line-height:50px;border-bottom:1px solid #ddd;color:#fff;cursor:pointer;}
.demo-list li.bgElement{background-color:#fff;border: 4px dashed #ddd !important;}
.demo-list li.draging{background-color:#ec971f;}

